Fix for ruby 1.9

Fixed ruby-riff version to >= 0.3.0, v0.3.1 seems to be broken.
Fixed incompatibility with IO.getc (in ruby-riff).
Fixed incompatibility with Pathname/String concatenation.
Fixed incompatibility with an error type thrown by frozen object.

Rakefile

@@ -59,7 +59,7 @@ spec = Gem::Specification.new do |s|
 
   s.add_dependency('open4')
   s.add_dependency('ruby-mp3info')
-  s.add_dependency('riff')
+  s.add_dependency('riff', '<= 0.3.0')
   s.add_dependency('tempdir')
   #s.required_ruby_version = '>= 1.8.2'
 

lib/scissor.rb

@@ -53,3 +53,19 @@ def mix(scissor_array, filename, options = {})
     end
   end
 end
+
+# for ruby 1.9
+if IO.instance_methods.include? :getbyte
+  class << Riff::Reader::Chunk
+    alias :read_bytes_to_int_original :read_bytes_to_int
+    def read_bytes_to_int file, bytes
+      require 'delegate'
+      file_delegate = SimpleDelegator.new(file)
+      def file_delegate.getc
+        getbyte
+      end
+      read_bytes_to_int_original file_delegate, bytes
+    end
+  end
+end
+

lib/scissor/writer.rb

@@ -38,7 +38,7 @@ def fragments_to_file(fragments, outfile, tmpdir)
 
         fragment_outfile =
           fragment_filename.extname.downcase == '.wav' ? fragment_filename :
-          tmpdir + (Digest::MD5.hexdigest(fragment_filename) + '.wav')
+          tmpdir + (Digest::MD5.hexdigest(fragment_filename.to_s) + '.wav')
 
         unless fragment_outfile.exist?
           run_command("ffmpeg -i \"#{fragment_filename}\" \"#{fragment_outfile}\"")

spec/fragment_spec.rb

@@ -27,7 +27,7 @@
   it "should freezed" do
     lambda {
       @fragment.instance_eval { @duration = 1 }
-    }.should raise_error(TypeError)
+    }.should raise_error(StandardError, "can't modify frozen object")
   end
 
   it "should have a pitch" do